I have been having problem while tryong to create the database -- rake create db --
I receive this error
“rake/rdoctask is deprecated. use rdoc/task instead

Can anyone help me about this

Thanks

Make sure that the user credentials in your file config/database.yml are exactly the same as the database details you used to create your dbase manually. Be very keen about the spaces in the file also.
It is also possible the the file is corrupted. If so, just replace the file with a new one from the downloaded source code